analytic function in creating Geometry
Hi, I defined an analytic function. I can use it when I define Boundaries-Port, but I cannot use it in Geometry. Why is that? Thanks.
View Articlesetup of output port with two different polarization states simutaneously
Hello, I encountered a problem about setup of output port, and need your kind help. The circular polarized light incidence on a transparent structure normally, at the transmitted output port, there...
View Articlehow to model evanescent effect from two optical pulses propagating in the...
Dear Users Now I have deposited a thin film on top of a SiN waveguide and I applied two optical pulses with different wavelengths into this SiN waveguide and I want to model model temperature effect...
View ArticleTE and TM Port excitation
Dear all, I set up a simulation for a plane-wave incident on an interface (see e.g. first part of "Scattering on a Substrate" COMSOL tutorial). I would like to have an input E field on the port with is...
View ArticleElectric Field dependant Equation entry in COMSOL 5.2
If I want to express that the conductivity of the material depends on the Electric Field in Y direction (Ey). How should I write Ey in the equation in this case. I want to know how I can make realize...
View ArticleHow to plot the electric field of circular polarized light?
Hello I simulate a meta-surface model when a circular polarized light is normal incident, the polarization state of transmitted light is circular polarized too, and how can I plot the transmitted...
View Articlephotothermal or laser heating simulation in Comsol
Hi, I am new to Comsol. I am trying to simulate the temperature rising of the plasmonic structure during the laser illumination. Assuming the Electromagnetic wave plus the heat transfer will do the...
View ArticleBand diagram of 3D periodic photonic crystals
Hi, I try to calculate band diagram for 3D photonic crystal using RF module (version 4.4). At first, for the sake of simplicity, I plot a cubic unit cell and set Floquet boundary conditions (3 pairs)....
View ArticleDifference between Extinction cross section and Extinction spectra ?
Hello everyone Can anyone explain me what is the difference between Extinction Cross section and Extinction Spectra. I know how to calculate Extinction cross section for nano particle, but How could i...
View Articlehow to simulate the reflectivity and trasmission of a SPP filter
Dear all i want to reproduce the results published in V33,2874 OL(2008), where the SPP filter is simulated, but i do not know how to get (T, R and A) by using many attempts, could you help me, i am a...
View ArticleResonant Modes of a Microstrip
Hi everyone; I am trying to obtain the resonance frequencies of a regular microstrip. To do that, I use the study of eigenfrequency. However I am continuously getting the same and same errors which...
View ArticleInductance and capacitance from complex impedance solution in RF module
I was wondering if there is any way of backing out a value for inductance and capacitance between two ports/ lumped ports in the RF module (specifically, in the emw frequency domain solver). The module...
View ArticleHow to model multilayer thin films at oblique incidence?
I am modelling nano particles embedded in multilayer thin films. So far i have calculated the field inside the thin film stack analytically (using TMM theory), injected the results into COMSOL...
View ArticleFrequency Domain to Time Domain , COMSOL 5.2
Hi, I have a design which involves two antenna and a gap in between. I have estimated the e-field intensity through the gap, where e-field is a function of frequency and space. However, I need to...
View ArticleParameter sweep breaking geometry
Hi all, I've been having a really frustrating problem with parameter sweep, and was wondering if anyone has any insight: I am simulating the 2D cross-section of a co-planar waveguide, and am sweeping...
View Articlesimulation the force and filed of optical trapping particle
hi, I use the RF module to simulate the force and field of optical trapping particle, there are some problems, I sincerely ask for your help : 1 the size of particle is 1um, the light wavelength can...
View ArticleSimple optimization in comsol 5.0
Hey Everyone I'm trying to do A simple optimization in Comsol 5.0 However it keeps giving me an error. In the attached image you can se how I set it up. A quick summary: under definitions I have...
View ArticleFrequency domain to time domain in RF module, COMSOL 5.2
Hello, I have an Electric field distribution in frequency domain and also an Electric field distribution in terms of space domain. I would like to see the Electric field distribution in time domain. I...
View ArticleMagnetic and Electric Fields with the Frequency Domain
If I use the Magnetic and Electric Fields ( mef ) module, with the Frequency Domain (60 Hz ), and I apply 10A in a terminal of a wire cooper, for example , I shoud consider the current like 10A RMS or...
View ArticleRF Transient Far Field
Hi All, I'm wondering if anyone knows if it is possible to calculate the the far field radiation pattern when modeling in the time domain. Currently I'm modeling some pulsed terahertz photoconductive...
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